DE77798C - Idle paper line - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The idle paper line forming the subject of the present invention enables the printing area of the cylinder of the printing machine both after each one-off, as to be provided with fresh dirt paper even after any number of revolutions.

The device explained in detail in the drawings offers compared to others so far various advantages to similar institutions which have become known. It is more simply constructed and consists of only a few parts, which are not subject to great wear and tear are. Operation with this device is therefore safer and easier to use and easier. The idle paper line is adjustable to the greatest extent possible.

The essential novelty of the invention consists in the novel way in which one interchangeable thumb disk from temporary rotary movement on the one mounted in the cylinder Take-up roll for the dirty paper is transferred. While with the previously known such devices for this purpose more or less complex leverage, Ratchet wheels and pawls and the like are provided according to the present invention by the aforementioned thumb disk one on the cylinder axis displaceable, against the machine frame non-rotatably arranged wheel, against the pressure of a spring shifted its axis and acts through a rib arranged on it at its edge such on a self-engaged with the aforesaid wheel and by the rotation of the pressure cylinder in rotation, that this in turn shifted and coupled to a wheel seated on the axis of the take-up roll for the dirty paper so that the dirty paper is wound up and thereby moved on.

As can be seen from the drawings, the paper discharge rollers P rest in the fixed bearings of the cylinder D , while the paper take ^{-up rollers P 1} are kept pressed against rollers W on spindles Sp by means of spring force. At the ends of these spindles, which are fixedly mounted in the cylinder, the disks S are keyed, each of which has a toothed side surface and forms a link of a coupling. As the second link of this coupling, a wheel R is slidably seated on each spindle, the inwardly directed disk S ^{1 of which is} also toothed like the side of the disk S. Towards the outside, each wheel R widens to a sleeve H, inside of which sits a spring F and presses the wheel outwards, so that the coupling S ¹ S is usually kept inoperative. A roller r is mounted between two tabs L located on the sleeve H.

On the wheel R ¹ , which sits loosely on the axis of the cylinder D, is protected against rotation by screws s and is in engagement with the wheel R , the cam K is attached, which carries a circular rib N inside. In front of the wheel R ¹ , the spring F ^{1 is} attached to the cylinder axis, which presses it against the frame wall S ' ² when the roller r is not to touch the rib N. In the wheel R ¹ there are two bolts B, FIGS. 2 and 4, which pass through the frame S ²

Claims (1)

and connected to the outside by the piece B ¹ , on the front side of which the roller r ^{1 is} mounted. The worm Sch , which engages in the worm wheel Sch ¹ , is attached to the outside of the cylinder axis. On the axis of the latter sits the spur gear St, in which an intermediate gear Z engages, whereby the spur gear St ^{1 is} driven. The thumb disk K ¹ , which carries the rib N ¹ and acts on the roller r ^1, sits on the same axis as the spur gear St ^1. If the cylinder D moves, the wheel R rolls off on R ¹ and is set in rotation. As soon as the roller r runs on the rib N , the toothed disks S ^{1 are brought} into engagement with the toothed disks S on the spindles Sp. The roller W on the spindle Sp winds the dirty paper on and on the paper roll P ^{1 by friction} from the paper roll P. This happens as long as the roller r runs on the rib N of the disk K. The pressing of the rib N against the roller r is effected by the fact that the radi? ¹ is pressed inwardly by the rib IV of the thumb disk K ¹ acts on the roller r ^{1. 1} As soon as the rib N ¹ no longer acts on roller r ¹ , the spring F ¹ pushes the wheel R ¹ and the cam plate K outwards, whereby the pressure of the cam plate K on roller r ceases and the wheel R with washer S ¹ by spring F is pressed off from disk S. This also stops the rotation of spindle Sp with roller If and the dirty paper remains at rest on the cylinder; Wheel R with disc S ¹ dances empty around wheel R \ until the movement is repeated by pressing the rib N ¹ on roller r ^1. By placing differently sized gears St ¹ on the shaft of K ^x and adjusting the intermediate wheel Z in the slot Sch ² , as well as inserting the various ribs 2V ¹ in the thumb disk K ¹ , the idle paper line can be activated after any number of revolutions of the cylinder. The described idle paper line in the printing cylinder should be used in all printing machines are used, which produce both face and reverse printing at the same time, that is, both with rotary machines that print from curved plates, as well as with planographic printing machines, which print from flat set. Patenτ claim: Idle paper line in the cylinder of printing machines, characterized by a wheel (R ¹ J that is displaceable on the axis of the printing cylinder and non-rotatable against the machine frame), which is moved by a thumb disc (K ¹ J acting on its hub and by a wheel on the carrier K arranged circular rib (NJ a member obtained from the printing cylinder in rotation (HRS ¹ J of a coupling with its second member (S) sitting on the axis of the take-up roll for the dirt paper, in such a way that the dirt paper is thereby rolled up. For this purpose ι sheet of drawings.